Subtract 63/80 from 30/28
1st number: 1 2/28, 2nd number: 63/80
30/28 - 63/80 is 159/560.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 28 × 20 = 560,
30/28 = 30 × 20/28 × 20 = 600/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
63/80 = 63 × 7/80 × 7 = 441/560 - Subtract the two like fractions:
600/560 - 441/560 = 600 - 441/560 = 159/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/28-63/80 30/56-63/80 90/28-63/80 30/84-63/80